#define  _CRT_SECURE_NO_WARNINGS 1
#include<stdio.h>

int my_strlen(char  *s)
{
	char *p = s;
	while (*p !='\0')
	{
		p++;
		return p-s;
	}

}
int main()
{	
	
	printf("%d " ,my_strlen("abc"));
	return 0;
}